Sealing arrangement for a transit vehicle

Abstract

A sealing arrangement for a door of a transit vehicle with an angularly disposed floor portion incorporates a rotatably disposed driving member in combination with a driven member attached to the sealing arrangement to enable vertical movement thereof for providing a weather seal when the door is closed and accommodating the angularly disposed floor portion when the door is open and the door is disposed within the transit vehicle and above the floor portion. An inner and outer cover may be provided at the bottom edge of the door for esthetic purposes.

1. A sealing arrangement adapted for sealing against a level surface in a first position and against a surface disposed at an angle with respect to the level surface in a second position, said sealing arrangement rotatable between said first position and said second position by a pivotal connection said sealing arrangement comprising:
 (a) a mounting member having at least one cavity; 
 (b) at least one sealing member attached to said mounting member with at least one fastener engaging said at least one cavity; and 
 (c) a motion conversion assembly for moving said sealing member comprising:
 (i) a driving member including a substantially cylindrical first portion defining an axis, a guiding portion extending outwardly from said substantially cylindrical first portion, a second portion disposed adjacent said first portion, and a cylindrical cavity disposed within said second portion and axially aligned with said first portion; 
 (ii) a driven member including a substantially cylindrical bore for receiving the driving member, a helical slot for cooperating with said guiding portion of said driving member, and a mounting cavity extending outwardly from and communicating with said substantially cylindrical bore for enabling engagement and disengagement of said guiding portion with said helical slot; and 
 (iii) said driven member adapted for rotary and axial motion with respect to said driving member by a rotation of said substantially cylindrical first portion with respect to said substantially cylindrical bore and by movement of said guiding portion with respect to said helical slot as said guiding portion engages said helical slot. 
 
 
   
   
     2. The sealing arrangement, according to  claim 1 , wherein said at least one cavity of said mounting member is an elongated slot. 
   
   
     3. The sealing arrangement, according to  claim 1 , wherein said sealing arrangement further includes a second sealing member disposed adjacent said at least one sealing member. 
   
   
     4. The sealing arrangement, according to  claim 1 , wherein said sealing arrangement further includes one of a pivot and a pivot cavity disposed within said mounting member of said sealing arrangement. 
   
   
     5. The sealing arrangement, according to  claim 4 , wherein said pivot cavity is elongated. 
   
   
     6. The sealing arrangement, according to  claim 4 , wherein said one of a pivot and a pivot cavity is manufactured from a material having a predetermined coefficient of friction selected from the group consisting of plastic, oil impregnated bronze, oil impregnated iron, and brass.